Medical Information Only. Consult your healthcare provider before considering clinical trial enrollment.
Healthy Adult Participants: early-phase trial registry
3 of 5 indexed Healthy Adult Participants trials are currently recruiting, with more weight in Phase 1-2.
Corpus placement: #3,391 of 28,707 conditions by registered trial count.
5 US clinical trials · 3 currently recruiting · #3,391 of 28,707 conditions by registered trial count
Healthy Adult Participants: 5 US clinical trials tracked, 3 recruiting.
Healthy Adult Participants is the subject of 5 registered US clinical trials on ClinicalTrials.gov, 3 of them currently open to new participants. 0 are in Phase 3-4 (later-stage) and 5 in Phase 1-2 (earlier-stage). The most active sponsor is Gates Medical Research Institute, running 1 of these trials.
Enrollment posture brief
Registry condition healthy-adult-participants
OPEN 3 | RECR 60% | LATE 0 | EARLY 5 | RANK #3391 | SPON 1
Volume-matched condition peers
Nearest open-share peer: Acute Kidney Injury (AKI) (60% recruiting · 5 trials)
Healthy Adult Participants lists 3 open slots (60% of 5 indexed trials). Peers are matched on registered volume, not therapeutic-area browse lists. How peer matching works →
Key findings
What ClinicalTrials.gov does not surface for Healthy Adult Participants on its own pages , computed from the registry mirror as of 2026-08-08. Each line carries its own denominator so it can be quoted as it stands.
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Healthy Adult Participants is recruiting above its size-band peers.
3 of 5 indexed trials (60%) are open to enrollment, against a 46.5% average across 27,806 conditions with fewer than 20 trials. The peer set uses the same ClinicalTrials.gov-derived counts as this page.
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One sponsor concentrates Healthy Adult Participants research.
Gates Medical Research Institute accounts for 1 of 5 trials (20%). 5 distinct sponsors appear on at least one study for this condition label.
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Most Healthy Adult Participants trials plan to enrol fewer than 100 people.
Median target enrolment is 44 among the 5 trials that report a genuine target (sentinel values excluded). 3 of those (60%) plan for fewer than 100 participants.
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Healthy Adult Participants research is mostly interventional.
5 interventional and 0 observational studies make up this index (100% interventional). Study type is sponsor-reported on ClinicalTrials.gov.
Open and recent trials
5 total, page 1 of 1
A Trial in Healthy Adult Participants to Evaluate the Safety, Tolerability, and Behavior in the Body of TBD11
Gates Medical Research Institute
NCT06707142
Randomized, Double-Blind, Placebo-Controlled, Single and Multiple Ascending Dose Study of PORT-77 Administered to Healthy Adult Participants
Portal Therapeutics
NCT06346509
Evaluation of [18F]GATT-44 for Positron Emission Tomography Imaging of the GABA Transporter-1
Yale University
NCT07457736
A Study to Learn if Itraconazole Changes How the Body Processes PF-07248144 (Study Medicine)
Pfizer
NCT07335419
Trial to Demonstrate the Equivalence of Two Different Strengths of Oral Centanafadine Capsules in Healthy Subjects
Otsuka Pharmaceutical Development & Commercialization
NCT07486895
Phase Distribution
| Phase | Trial count |
|---|---|
| Phase 1 | 5 |
Top Sponsors
Named interventions
Most-linked intervention names on Healthy Adult Participants records (sponsor-reported on ClinicalTrials.gov). Counts are trial links, not unique products.
US sites by state
Facility locations filed on Healthy Adult Participants trials. A trial with sites in several states counts in each.
Source: ClinicalTrials.gov, National Library of Medicine. Data is informational only.
Related
What to do with this Healthy Adult Participants page
5 registered trials, 3 currently recruiting, is a starting point for a conversation, not a diagnosis or a recommendation.
- 3 Healthy Adult Participants trials are currently recruiting, check eligibility criteria before contacting a site. Browse recruiting trials
- Gates Medical Research Institute sponsors the most Healthy Adult Participants trials on record, review their full trial history before evaluating a specific study. See Gates Medical Research Institute's trials
- Bring the specific trial ID (NCT number) to your own doctor before enrolling, this page is a directory, not medical guidance. Read the trial-finding guide
Trial and recruiting counts reflect ClinicalTrials.gov registry status as of the data vintage above; individual trial eligibility and enrollment status can change.
Every figure on PlainTrial is rendered directly from the ClinicalTrials.gov registry, no number is typed in by an editor. This Healthy Adult Participants condition card totals 5 registered trials; most-linked intervention Placebo; top US site state Connecticut. See our editorial standards & corrections policy, the methodology behind these numbers, the data changelog, or report a data error.